Tandem is a Latin adverb meaning "at length" or "finally". In English, the term was originally used for two or more draft horses harnessed one behind another as opposed to side-by-side. By extension the term now refers to any team (of machines, animals or people) working together one behind another. In English, tandem is often used as an adjective in "tandem seating", as in a two-seat aircraft where the two occupants sit one behind the other, or in "tandem bicycle", where the riders are seated… (More on Tandem)